Patent US3289941A successfully refreshed from Google Patents.
US3289941A
Expired / Lapsed
US
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Railway track without ballast
Assignee: D'ETNDES FERRORIAIRES Ste
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Filing: 1964-12-07
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Granted: 1966-12-06
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Sonneville Roger Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:43
CPC Classifications
E; E01; E01B; E01B1/00; E01B1/002; E01B1/008; E01B3/00; E01B3/28; E01B3/38; E01B3/40; E01B9/00; E01B9/02; E01B1/005; E01B9/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
RAILWAY TRACK WITHOUT BALLAST COMPRISING A CONTINUOUS PLATFORM OVERLYING THE SUBSTRUCTURE OF THE TRACK, BLOCKS SUPPORTING RAILS WHICH ARE FASTENED TO THE TOP FACE OF THE BLOCKS BY RAIL FASTENERS, A SHEATH OF ELASTOMER MATERIAL COVERING THE LOWER PART OF EACH BLOCK, AND CAVITIES IN THE PLATFORM IN WHICH THE BLOCKS ARE RESPECTIVELY INSERTED, AND SHEATHS BEING INTERPOSED BETWEEEN THE FACES OF THE BLOCKS AND THE FACES OF THE CAVITIES, THE SHEATS HAVING A BOTTOM WALL WHICH IS IN CONTACT WITH THE BASE OF THE CAVITY AND HAS A CLOSED CELLULAR STRUCTURE, EACH SHEATH HAVING LATERAL WALLS WHICH ARE FIXED TO THE BOTTOM WALL IN A FLUIDTIGHT MANNER, THE DIMENSIONS OF THE SHEATH BEING SUCH THAT THE WALLS OF THE SHEATH MOUNTED ON THE BLOCK ARE IN AN ELASTICALLY STRETCH CONDITION.
Claim 2
Dependent Claim
131 words
RAILWAY TRACK WITHOUT BALLAST COMPRISING A CONTINUOUS PLATFORM OVERLYING THE SUBSTRUCTURE OF THE TRACK, BLOCKS SUPPORTING RAILS WHICH ARE FASTENED TO THE TOP FACE OF THE BLOCKS BY RAIL FASTENERS, A SHEATH OF ELASTOMER MATERIAL COVERING THE LOWER PART OF EACH BLOCK, AND CAVITIES IN THE PLATFORM IN WHICH THE BLOCKS ARE RESPECTIVELY INSERTED, AND SHEATHS BEING INTERPOSED BETWEEEN THE FACES OF THE BLOCKS AND THE FACES OF THE CAVITIES, THE SHEATS HAVING A BOTTOM WALL WHICH IS IN CONTACT WITH THE BASE OF THE CAVITY AND HAS A CLOSED CELLULAR STRUCTURE, EACH SHEATH HAVING LATERAL WALLS WHICH ARE FIXED TO THE BOTTOM WALL IN A FLUIDTIGHT MANNER, THE DIMENSIONS OF THE SHEATH BEING SUCH THAT THE WALLS OF THE SHEATH MOUNTED ON THE BLOCK ARE IN AN ELASTICALLY STRETCH CONDITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |